I have a U2311H but can't use it with a HDMI to DVI adapter.
U2311H DVI -> DVI to HDMI adapter -> HDMI to HDMI cable -> HD7870/PS3
The U2311H doesn't detect both my desktop or my PS3 and shows the "Please check your connection" message.
The adapter works fine for my other monitors both from the PS3 and the monitors.